Debugging DFU in IAR - SDK12.3.0!!!

[Urvisha Andani]

Hello All,

I am working on nRF51822 use IAR nRF5 SDK 12.3.0.

I am trying to debug the DFU in IAR. At that time i got an error show below

I use IAR version show below,

So pleas give me solution as sson as possible.

Thanks & regards,

Urvisha Andani

[Vidar Berg]

Hi,

It because of the uECC library. The debug information generated by GCC is not compatible with IAR. Try to compile the library without '-g' or compile with '-gdwarf-3' to override the default DWARF version. 

[Urvisha Andani]

hi,

Thanks for reply. 

Can you please share step to compile uECC? I have downloaded uECC library from github but haven't compile it.

[Vidar Berg]

Hi,

You need to change the compile flag in the Makefile as well: "CFLAGS +=  -Wall -Werror -Os -g3" --> "CFLAGS +=  -Wall -Werror -Os -gdwarf-3"

[Urvisha Andani]

Hi,

Thanks for reply.

I haven't got this error but still advertisement is not start and debug window show like below,

And I have also try to scan my device in nRF connect application but not show in my device.

[Vidar Berg]

Which memory variant of the 51 are you using? And does the bootloader work if you just program it nrfjprog, etc.? 

[Urvisha Andani]

Memory setting is as like below,

And use nRF51822 QFAA.

[Vidar Berg]

The memory settings are for the 32K RAM variant, while your chip has 16K. Try to change the RAM end address to 0x20004000 and start address to 0x20002500.

Edit: RAM base must be at least 0x200025e0 for the bootloader in SDK 12.3.0

[Urvisha Andani]

Actually I am using mdbt40 custom board in which nRF51822 use.And in this module 32K RAM is available showing in specification of mdBT40 and link is given below,

https://www.seeedstudio.com/MDBT40-256RV3-nRF51822-based-BLE-module.html

[Urvisha Andani]

I also change of RAM address as you told but not run show like below,

[Vidar Berg]

The APP RAM base must be 0x200025e0. Can you try this and see if you get the same result?

[Urvisha Andani]

Thanks for the input by following them my problem got resolved. 

[Vidar Berg]

Thanks for the update. Note that the mdBT40 comes two memory variants so I think you may have the 16K RAM one since you had to change the linker settings to make it work.